<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">
                    当前城市
                </div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">
                            {{this.whycity}}
                        </div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">
                    热门城市
                </div>
                <div class="button-list">
                    <div @click="handleCityClikc(item.name)" v-for="item of hot" :key='item.id' class="button-wrapper">
                        <div class="button">
                            {{item.name}}
                        </div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
                <div class="title border-topbottom">
                    {{key}}
                </div>
                <div class="item-list">
                    <div v-for="innerItem of item" :key="innerItem.id" @click="handleCityClikc(innerItem.name)" class="item border-bottom">
                       {{innerItem.name}}
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import BScroll from 'better-scroll'
import { mapState } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  },
  computed: {
    ...mapState({
      whycity: 'city'
    })
  },
  watch: {
    letter () {
      console.log(this.letter)
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  methods: {
    handleCityClikc (city) {
      // vuex要调用actions要使用dispatch方法
      this.$store.dispatch('changeCity', city)
      this.$router.push('/')
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl';
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc
  .border-bottom
    &:before
      border-color #ccc
  .list
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    .title
      line-height .54rem
      background #eeeeee
      padding-left .2rem
      color #666
      font-size .26rem
    .button-list
      overflow hidden
      padding .1rem .6rem .1rem .1rem
      .button-wrapper
        float left
        width 33.33%
        .button
          margin .1rem
          padding  .1rem 0
          text-align center
          border .02rem solid #ccc
    .item-list
      .item
        line-height .76rem
        color #666
        padding-left .2rem
</style>
